condition	mean	min	max
4 h after light	6.2021999999999995	6.1251	6.2470099999999995
8 h after light	6.21192	6.17821	6.242430000000001
12 h after light	6.135183333333333	6.10847	6.16981
4 h after dark	6.169843333333334	6.09667	6.22393
8 h after dark	6.154813333333333	6.00891	6.24714
12 h after dark	6.288006666666667	6.12058	6.51236